How many presses of about 1 second can a car horn make if connected to a 12V, 7.5Ah alkaline lantern battery?
Tuesday, April 27th, 2010 at
1:43 am
I want to add a car horn to a bicycle and power it with a 12V, 7.5Ah alkaline lantern battery.
Possibly related posts: (automatically generated)
- Related posts on 7.5Ah
- home tips for more helpfull home improvement » Blog Archive » Can ...
- UPS BATTERY RAID CACHE BATTERY « SimonDirect.Com -CiscoMemory ...
- Related posts on about
- How To Have No Complains About Lingerie « Simple Way to Life
- Insurance Article Depot » Straight Talk Information About ...
- How To Be A Wonderworker – Know Some Secrets About Sermon Making ...
- Related posts on alkaline
- ACER BATCL50L Battery « Lqbatteryshop's Blog
- Torch Tuesday on Flipilicious! Princeton Tec MiniWave LED/SCUBA ...
- Digital Camera Battery: More Power Every Time | Battery News Magazine
![]() |
![]() ISM ADAMO ROAD BIKE CYCLING SPLIT HORN SADDLE PERFECT CONDITION US $85.00
|
![]() BIKE BUGLE HORN CHROME OLD STYLE NEW US $12.99
|
![]() BIKE ELECTRIC HORN 8 SOUNDS FLASHING LIGHT UFO SHAPE US $18.99
|


US $.99






The actual answer will probably have to be determined experimentally, since we don’t know how the battery’s current delivery will diminish as it discharges, or what the internal resistance of the battery is, but assuming that the car horn draws about 5 amperes of current at 12V, the 7.5 Amp-hour rating means that it could ideally run the horn for about an hour and a half. That’s about 5,400 one-second presses.
The big question is whether the battery is designed to handle a 5-amp load. That 7.5 A-h rating may be assuming a much smaller current draw.